Respuesta :

ujoy64

Answer:

12

Step-by-step explanation:

Substitute in the values

7x = 7*3 = 21

-2y = - 2 * 4 =. - 8

Then there's - 1 aswell

Put it all together and you get 21 - 8 - 1

Whivh equals to 12

coolboy0905
The answer for this question is 12